body {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  background-color: #f0f2f5;
  min-height: 100vh;
  margin: 0;
  color: #333;
  padding: 2rem;
  box-sizing: border-box;
}

#app-layout {
  display: flex;
  gap: 2rem;
  max-width: 1200px;
  margin: 0 auto;
  align-items: flex-start;
}

/* Modal Styles */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(44, 62, 80, 0.95);
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: 1000;
  padding: 1rem;
}

.modal-content {
  background: white;
  padding: 2.5rem;
  border-radius: 16px;
  max-width: 600px;
  width: 100%;
  text-align: left;
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
  overflow-y: auto;
  max-height: 90vh;
}

.modal-content h1 {
  text-align: center;
  margin-bottom: 2rem;
  color: #2c3e50;
}

.modal-content h3 {
  color: #3498db;
  margin-top: 1.5rem;
  margin-bottom: 0.5rem;
  font-size: 1.1rem;
}

.modal-content p, .modal-content li {
  color: #555;
  line-height: 1.6;
}

.modal-content ul {
  padding-left: 1.5rem;
  margin: 0;
}

/* Main Game Container */
.container {
  flex: 2;
  background: white;
  padding: 2.5rem; /* More padding */
  border-radius: 16px;
  box-shadow: 0 10px 25px rgba(0,0,0,0.1);
  text-align: center;
  min-width: 0; /* Flexbox fix */
}

/* Sidebar */
#sidebar {
  flex: 1;
  background: white;
  padding: 1.5rem;
  border-radius: 16px;
  box-shadow: 0 10px 25px rgba(0,0,0,0.1);
  min-width: 250px;
  display: none; /* Hidden until conflicts exist */
  max-height: 80vh;
  overflow-y: auto;
}

h1 {
  margin-bottom: 0.5rem;
  font-weight: 600;
  color: #2c3e50;
}

#subtitle {
  margin-bottom: 2rem;
  color: #7f8c8d;
  font-size: 0.9rem;
}

/* Progress Bar */
#progress-container {
  width: 100%;
  background-color: #ecf0f1;
  border-radius: 10px;
  height: 10px;
  margin-bottom: 1rem;
  overflow: hidden;
}

#progress-fill {
  height: 100%;
  background-color: #2ecc71;
  width: 0%;
  transition: width 0.3s ease;
}

#progress-label {
  font-weight: bold;
  color: #2c3e50;
  margin-bottom: 0.5rem;
}

#encouragement {
  height: 24px;
  margin-bottom: 2rem; /* MORE WHITESPACE HERE */
  font-weight: bold;
  color: #3498db;
  font-size: 0.95rem;
}

/* Game Area */
#vs-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 2rem;
  gap: 1.5rem;
}

.value-card {
  flex: 1;
  background: #fff;
  border: 2px solid #e0e0e0;
  border-radius: 12px;
  padding: 1rem;
  font-size: 1.3rem;
  font-weight: bold;
  cursor: pointer;
  transition: all 0.2s ease;
  user-select: none;
  
  /* ANTI-JITTER FIXES */
  height: 180px; 
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 6px rgba(0,0,0,0.05);
  position: relative; /* For z-index context */
}

.value-card:hover {
  transform: translateY(-5px);
  border-color: #3498db;
  box-shadow: 0 8px 15px rgba(52, 152, 219, 0.2);
  z-index: 10;
}

.value-card.selected {
  background-color: #3498db;
  color: white;
  border-color: #3498db;
}

#vs {
  font-weight: 900;
  color: #95a5a6;
  font-size: 1.5rem;
}

/* Results */
#results {
  text-align: left;
  margin-top: 2rem;
  border-top: 1px solid #eee;
  padding-top: 1rem;
}

.top-value {
  background: #f1c40f;
  padding: 1rem;
  margin: 0.5rem 0;
  border-radius: 8px;
  font-weight: bold;
  font-size: 1.2rem;
  color: #2c3e50;
  display: flex;
  justify-content: space-between;
}

.list-item {
  padding: 0.5rem;
  border-bottom: 1px solid #eee;
  display: flex;
  justify-content: space-between;
  color: #555;
}

.bottom-value {
  padding: 0.5rem;
  border-bottom: 1px solid #ffdddd;
  background-color: #fff5f5;
  color: #c0392b;
  display: flex;
  justify-content: space-between;
  border-left: 3px solid #e74c3c;
  margin-top: 2px;
}

.conflict-item {
  background: #fff3cd;
  border-left: 4px solid #f1c40f;
  padding: 0.8rem;
  margin-bottom: 0.8rem;
  border-radius: 4px;
  text-align: left;
  font-size: 0.9rem;
  color: #856404;
}

.btn {
  background: #3498db;
  color: white;
  border: none;
  padding: 10px 20px;
  border-radius: 8px;
  font-size: 1rem;
  cursor: pointer;
  margin-top: 1rem;
}

/* Boost Button */
.btn-boost {
  background: #ecf0f1;
  border: none;
  border-radius: 4px;
  width: 24px;
  height: 24px;
  color: #2ecc71;
  font-weight: bold;
  font-size: 0.8rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.1s;
}

.btn-boost:hover {
  background: #2ecc71;
  color: white;
}

.btn-boost:active {
  transform: scale(0.95);
}

@keyframes popIn {
  0% { transform: translate(-50%, -50%) scale(0); opacity: 0; }
  80% { transform: translate(-50%, -50%) scale(1.1); opacity: 1; }
  100% { transform: translate(-50%, -50%) scale(1); }
}

/* --- MOBILE RESPONSIVE --- */
@media (max-width: 768px) {
  body {
    padding: 1rem;
  }
  
  #app-layout {
    flex-direction: column;
    gap: 1rem;
  }
  
  .container {
    width: 100%;
    padding: 1.5rem;
  }
  
  #sidebar {
    width: 100%;
    max-height: none;
    overflow-y: visible;
  }
  
  #vs-container {
    gap: 0.5rem;
  }
  
  .value-card {
    padding: 0.5rem;
    font-size: 1rem;
    height: 140px;
  }

  .modal-content {
    padding: 1.5rem;
  }
}